3x+21=-9

Simple and best practice solution for 3x+21=-9 equation. Check how easy it is, and learn it for the future. Our solution is simple, and easy to understand, so don`t hesitate to use it as a solution of your homework.

If it's not what You are looking for type in the equation solver your own equation and let us solve it.

Solution for 3x+21=-9 equation: 


Simplifying
3x + 21 = -9

Reorder the terms:
21 + 3x = -9

Solving
21 + 3x = -9

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '-21' to each side of the equation.
21 + -21 + 3x = -9 + -21

Combine like terms: 21 + -21 = 0
0 + 3x = -9 + -21
3x = -9 + -21

Combine like terms: -9 + -21 = -30
3x = -30

Divide each side by '3'.
x = -10

Simplifying
x = -10

See similar equations:

| 16(v+1)-4v=3(4v+1)-8 | | 8x+15y=239 | | 6st^4+18st^2-168s=0 | | 12(x-3)=(x+4)6+3x | | 62-6=18 | | (8z-6)(12z+4)=0 | | X=2y/3y-1 | | (81x/x)^1/4 | | -2x^2+8x+98=0 | | 16(3x-3)=4(12x+9) | | 10-t=9.7 | | 10m-(7m+4)-5m=9 | | x+2x-72=0 | | 10m-(7m+4)-5=9m | | 0.8a+10=a+8 | | 10m-(7m+4)-5=9 | | 3(x+2.82)=2x | | 144x^2+10x-131=0 | | 4+3a-b=0 | | 4(r-.6)=10 | | -12r=52+-4 | | 4p+q=7 | | 9x-9=6x-6 | | 74h=257+(-63h) | | -8(x+4)=7 | | 14x^2-12x-1=0 | | 8x+6.02=6x+10 | | 3(2x+1)+x=(39) | | 3*ln9/ln18-ln9 | | 3ln(9)/ln(18)-ln(9) | | 5x-74=2x-11 | | k-91=5 |

Equations solver categories